Intergenerational Associations Between Maternal Diet and Childhood Adiposity: A Bayesian Regularized Mediation...

Area of Science:

• Epidemiology
• Public Health
• Biostatistics

Background:

• Childhood obesity is linked to chronic diseases later in life.
• Pregnancy complications like gestational diabetes and maternal diet are associated with increased childhood obesity risk.
• Conventional analyses often overlook complex mediation pathways involving multiple factors.

Purpose of the Study:

• To develop and apply a novel mediation analysis framework for multiple exposures and mediators.
• To identify specific maternal risk factors influencing childhood body mass index (BMI) z-score.
• To inform the development of targeted prevention programs for childhood obesity.

Main Methods:

• Utilized a regularized two-stage approach for mediation analysis with multiple exposures and mediators.
• Employed shrinkage priors to select significant direct and indirect effect pathways.
• Applied the method to data from the Danish National Birth Cohort (DNBC).

Main Results:

• Identified 6 significant maternal risk factors affecting childhood BMI z-score at age 7.
• These factors demonstrated both direct and indirect effects on childhood BMI.
• Simulations confirmed the proposed model's good performance.

Conclusions:

• The developed mediation analysis model effectively identifies key maternal pathways influencing childhood obesity.
• Findings provide crucial insights for designing efficient public health interventions to combat childhood obesity.
• Understanding these complex relationships is vital for improving long-term child health outcomes.